feat(battle-engine): full Unity/VFX/god-object shims + expanded copy closure (2570 files)

Authored Unity primitive/object-model shim, VFX layer (control-flow-preserving, InstantVfx never invokes its action -- headless suppression), god-object stubs (GameMgr/EffectMgr/UIManager with faithfully-extracted nested enums), View/UI/Touch tree, LitJson+BetterList+Tuple copied, third-party stubs. Discovered Roslyn header-error masking: fixing class-header type errors unmasks body references, so the true copy closure is ~2570 files (was 782 under masking). Errors: masked-25720 -> 268; our shim files compile clean. Remaining: ~50 residual shim/external types, 24 NGUI UI-base overrides, static-type fixes, plus likely 1-2 more unmask waves.

SVSim.BattleEngine/Engine/Sqlite3Plugin/Query.cs

@@ -0,0 +1,90 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Sqlite3Plugin;
+
+public class Query : IDisposable
+{
+	protected DBProxy _proxy;
+
+	protected IntPtr _stmt = IntPtr.Zero;
+
+	public Query(DBProxy proxy, string sql)
+	{
+		_Setup(proxy, sql);
+	}
+
+	protected void _Setup(DBProxy proxy, string sql)
+	{
+		_proxy = proxy;
+		byte[] bytes = Encoding.UTF8.GetBytes(sql);
+		IntPtr ppStmt;
+		int num = Sqlite3LibImport.sqlite3_prepare_v2(proxy.DBHandle, bytes, bytes.Length, out ppStmt, IntPtr.Zero);
+		if (num != 0)
+		{
+			ResultCode.CheckCorruption(num);
+			throw new Exception($"sqlite3_prepare_v2 failed(code {num}) with sql: {sql}");
+		}
+		_stmt = ppStmt;
+	}
+
+	public virtual void Dispose()
+	{
+		if (_stmt != IntPtr.Zero)
+		{
+			int num = Sqlite3LibImport.sqlite3_finalize(_stmt);
+			_stmt = IntPtr.Zero;
+			if (num != 0)
+			{
+				Debug.LogError("sqlite3_finalize error: " + num);
+				ResultCode.CheckCorruption(num);
+			}
+		}
+	}
+
+	public bool Step()
+	{
+		int num = Sqlite3LibImport.sqlite3_step(_stmt);
+		bool num2 = num == 100;
+		if (!num2)
+		{
+			ResultCode.CheckCorruption(num);
+		}
+		return num2;
+	}
+
+	public int GetInt(int idx)
+	{
+		return Sqlite3LibImport.sqlite3_column_int(_stmt, idx);
+	}
+
+	public double GetDouble(int idx)
+	{
+		return Sqlite3LibImport.sqlite3_column_double(_stmt, idx);
+	}
+
+	public string GetText(int idx)
+	{
+		return Marshal.PtrToStringAnsi(Sqlite3LibImport.sqlite3_column_text(_stmt, idx));
+	}
+
+	public byte[] GetBlob(int idx)
+	{
+		int num = Sqlite3LibImport.sqlite3_column_bytes(_stmt, idx);
+		if (num == 0)
+		{
+			Debug.LogError("null blob at idx: " + idx);
+			return null;
+		}
+		IntPtr source = Sqlite3LibImport.sqlite3_column_blob(_stmt, idx);
+		byte[] array = new byte[num];
+		Marshal.Copy(source, array, 0, num);
+		return array;
+	}
+
+	public bool IsNull(int idx)
+	{
+		return Sqlite3LibImport.sqlite3_column_type(_stmt, idx) == 5;
+	}
+}